Method of calibrating optical sensor, optical sensor, and apparatus for estimating bio-information
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United States of America Patent
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May 14, 2024
Grant Date -
Nov 18, 2021
app pub date -
Oct 29, 2020
filing date -
May 18, 2020
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Abstract
A method of calibrating an optical sensor may include acquiring a first characteristic for an external light source through a detector of an optical sensor while an internal light source of the optical sensor is turned off; driving the internal light source; acquiring a second characteristic for the internal light source and the external light source through the detector, based on driving the internal light source; and acquiring a reference characteristic of the internal light source, for calculation of an absorbance of an object, based on the first characteristic and the second characteristic.
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